JP4407919B2 - Screw correction jig - Google Patents

Screw correction jig Download PDF

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JP4407919B2
JP4407919B2 JP2004142165A JP2004142165A JP4407919B2 JP 4407919 B2 JP4407919 B2 JP 4407919B2 JP 2004142165 A JP2004142165 A JP 2004142165A JP 2004142165 A JP2004142165 A JP 2004142165A JP 4407919 B2 JP4407919 B2 JP 4407919B2
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screw
rolling
roller
jig
thread
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JP2005324202A (en
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英雄 出口
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Description

本発明は、ネジ山の潰れ等の損傷を修正する技術に関する。   The present invention relates to a technique for correcting damage such as screw crushing.

従来、ボルト等のネジ部材を使用する際、硬いものに当てる等によってネジ山が損傷することがあり、この場合、金鋸などによって目立てを行いネジ山を再生したり、ボルトの破損部をカットしつなぎ旋盤などでネジ加工を行ったりするような修正方法が採用されるが、分割したダイスの内周面にネジ山形成用の切刃を形成し、ボルトを挟み込むように分割ダイスを結合することにより切刃をネジ溝に嵌合させ、これをソケットレンチで回転させることにより、ネジ山の損傷を修正するような技術も知られている。(例えば、特許文献1参照。)   Conventionally, when screw members such as bolts are used, the thread may be damaged by hitting it against a hard object. In this case, sharpening with a gold saw etc. to regenerate the thread or cut the damaged part of the bolt A correction method is used, such as threading with a continuous lathe, etc., but a cutting blade for thread formation is formed on the inner peripheral surface of the divided die, and the divided dies are joined so as to sandwich the bolt. A technique is also known in which a cutting blade is fitted into a thread groove and rotated with a socket wrench so that damage to the thread is corrected. (For example, refer to Patent Document 1.)

特開2000−64278号公報JP 2000-64278 A

ところが、金鋸などで目立てを行う方法は、損傷個所が広い場合には工数がかかり、また、切削が基本となるため再使用することができないという問題がある。
また、特許文献1の場合は、ボルト等のサイズに合わせて複数種類のダイスを準備しておかなければならず、保管場所や管理等の問題が生じる。
However, the method of sharpening with a gold saw or the like has a problem that it takes man-hours when the damaged part is wide, and it cannot be reused because cutting is fundamental.
Further, in the case of Patent Document 1, a plurality of types of dies must be prepared in accordance with the size of a bolt or the like, which causes problems such as storage location and management.

そこで本発明は、簡単な操作でネジ山の損傷を修正することができ、また、ボルト等のサイズが変化する場合でも一つの治具で簡単に対応できるようにすることを目的とする。   Accordingly, an object of the present invention is to make it possible to correct damage to a screw thread by a simple operation, and to easily cope with a single jig even when the size of a bolt or the like changes.

上記目的を達成するため本発明は、破損したネジを修正する治具において、ネジ溝に嵌合可能な複数の太鼓型形状の転造ローラを対向状に配置し、これら複数の転造ローラのうち、対向する一方側の転造ローラを、他方側の転造ローラに対して進退動自在にするとともに、任意の位置で固定できるようにした。   In order to achieve the above object, the present invention provides a jig for repairing a damaged screw, in which a plurality of drum-shaped rolling rollers that can be fitted in a thread groove are arranged in an opposing manner, and the plurality of rolling rollers are Among them, the opposing rolling roller on one side can be moved forward and backward relative to the rolling roller on the other side, and can be fixed at an arbitrary position.

そして、固定側の転造ローラをネジ溝の正常な部分に嵌合させ、これに対向する転造ローラを前進させることにより、可動側の転造ローラもネジ溝の正常な部分に嵌合させてネジ軸を挟持した状態で位置を固定するとともに、治具本体をネジの損傷部分に向けて回転移動させることにより、ネジ山の潰れ等を転造ローラで修正加工する。この際、転造ローラによる修正加工は、太鼓型形状のローラによる転造加工となるため、ネジ山の強度を維持することができ、場合によっては新品に近い状態に復元することも可能となる。
また、可動側の転動ローラを自由な位置で固定できるため、ネジのサイズが異なっても一つの治具で対応できる。
なお、転造ローラの数としては、ネジ軸を周囲から安定した状態で挟持できるようにすることが好ましく、少なくとも3個以上あることが好ましい。
Then, the fixed-side rolling roller is fitted into the normal part of the thread groove, and the rolling roller facing the moving part is advanced so that the movable-side rolling roller is also fitted into the normal part of the thread groove. Then, the position is fixed with the screw shaft clamped, and the jig body is rotated toward the damaged portion of the screw to correct the crushing of the thread with a rolling roller. At this time, the correction processing by the rolling roller is rolling processing by a drum-shaped roller, so that the strength of the thread can be maintained, and in some cases, it can be restored to a state close to a new product. .
In addition, since the rolling roller on the movable side can be fixed at a free position, even if the screw size is different, a single jig can be used.
The number of rolling rollers is preferably such that the screw shaft can be stably clamped from the periphery, and is preferably at least 3 or more.

また本発明では、前記転造ローラを、ローラ軸方向に遊動可能に支持するようにした。
このようにローラ軸方向に遊動可能に支持すれば、ネジのピッチが多少異なる場合でも対応できるようになり、汎用性を増す。
また、転動ローラをピローボールタイプの軸受で支持するようにすれば、リード角が多少異なる場合でもネジ溝方向に合わせた姿勢で嵌合させることができる。
In the present invention, the rolling roller is supported so as to be freely movable in the roller axial direction.
In this way, if it is supported so as to be freely movable in the roller axis direction, it becomes possible to cope with a case where the screw pitch is slightly different, and versatility is increased.
Further, if the rolling roller is supported by a pillow ball type bearing, even if the lead angle is slightly different, the rolling roller can be fitted in a posture matched to the screw groove direction.

ネジ溝に嵌合可能な複数の太鼓型形状の転造ローラを対向状に配置したネジの修正治具を設け、これら複数の転造ローラを正常な部分のネジ溝に嵌合させた後、治具本体をネジの損傷部分に向けて回転移動させることにより、ネジ山の潰れ等を転造ローラで修正加工することができ、この際、ネジのサイズが異なっても、対応できる。
また、転造ローラをローラ軸方向に遊動可能に支持することで、ネジのピッチやリード角が異なる場合でも対応できるため、汎用性が高い。
After providing a screw correction jig in which a plurality of drum-shaped rolling rollers that can be fitted into the thread grooves are arranged opposite to each other, after fitting the plurality of rolling rollers into the thread grooves of the normal part, By rotating and moving the jig body toward the damaged portion of the screw, the crushing of the thread can be corrected by the rolling roller, and at this time, it is possible to cope with different screw sizes.
Further, by supporting the rolling roller so as to be freely movable in the roller axial direction, it is possible to cope with a case where the pitch and lead angle of the screw are different, so that the versatility is high.

本発明の実施の形態について添付した図面に基づき説明する。
ここで図1は本発明に係るネジの修正治具の斜視図、図2は同修正治具を破損ネジに装着した状態の正面図、図3は同平面図、図4は転造ロールの拡大図、図5は破損したネジを修正する方法の説明図である。
Embodiments of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a perspective view of a screw correction jig according to the present invention, FIG. 2 is a front view of the correction jig mounted on a damaged screw, FIG. 3 is a plan view thereof, and FIG. FIG. 5 is an explanatory view of a method for correcting a damaged screw.

本発明に係るネジの修正治具は、簡単な操作でネジ山の損傷を修正することができる治具で、しかも、ネジサイズが変化する場合でも簡単に対応できるようにされ、一般のネジ式の固定治具を改良して構成されている。   The screw correction jig according to the present invention is a jig that can correct screw thread damage with a simple operation, and can be easily handled even when the screw size changes. The fixing jig is improved.

すなわち、本修正治具1は、図1乃至図3に示すように、略U字型の治具本体2と、この治具本体2の先端側に取り付けられる転造ローラ3と、基端側のネジ孔4に螺合して挿通するネジ軸5と、このネジ軸5の先端部に回転可能に取り付けられる左右一対のハウジング6と、各ハウジング6の内部に取り付けられるそれぞれ上下一対の転造ローラ7、8と、ネジ軸5の基端部に取り付けられる操作杆9を備えており、各転造ローラ3、7、8はそれぞれのローラ軸10まわりに回転自在に支持されるとともに、本実施例では、固定式の転造ローラ3が一個と、可動式の転造ローラ7、8の四個とが対向状に配置されている。   That is, as shown in FIGS. 1 to 3, the correction jig 1 includes a substantially U-shaped jig body 2, a rolling roller 3 attached to the distal end side of the jig body 2, and a proximal end side. A screw shaft 5 that is screwed into and inserted into the screw hole 4, a pair of left and right housings 6 that are rotatably attached to the tip of the screw shaft 5, and a pair of upper and lower rollers that are attached to the inside of each housing 6. The rollers 7 and 8 and an operating rod 9 attached to the base end portion of the screw shaft 5 are provided. Each of the rolling rollers 3, 7 and 8 is rotatably supported around each roller shaft 10, and In the embodiment, one fixed rolling roller 3 and four movable rolling rollers 7 and 8 are arranged to face each other.

そして、それぞれのハウジング6は、治具本体2に対して回転不能に規制されており、このため、ネジ軸5を回転させると、各ハウジング6が姿勢を保持したまま進退動するようにされている。   Each housing 6 is restricted to be non-rotatable with respect to the jig body 2, and for this reason, when the screw shaft 5 is rotated, each housing 6 moves forward and backward while maintaining its posture. Yes.

また、図4に示すように、各転造ローラ3、7、8を支持するローラ軸11には、各ローラ3、7、8を挟み込むように左右一対のバネ部材11が配設され、ローラ軸10方向に対して各転造ローラ3、7、8を遊動可能に支持している。   Also, as shown in FIG. 4, a pair of left and right spring members 11 are disposed on the roller shaft 11 that supports the rolling rollers 3, 7, and 8 so as to sandwich the rollers 3, 7, and 8. The rolling rollers 3, 7, and 8 are supported so as to be movable with respect to the direction of the shaft 10.

また、各転造ローラ3、7、8は、それぞれのローラ軸10に対してピロボールタイプの球面軸受によって支持されており、修正ネジnのリード角の変化に対応して傾斜可能にされている。
ちなみに、本転造ローラ3、7、8のそろばん玉形状のローラ先端角θ(図4)は、通常のボルトネジ等のネジ溝角度に多用されている55度と60度の二種類を準備している。
Each of the rolling rollers 3, 7, and 8 is supported by a pillow ball type spherical bearing with respect to each roller shaft 10, and can be inclined in accordance with a change in the lead angle of the correction screw n. .
Incidentally, the abacus-shaped roller tip angle θ (FIG. 4) of the rolling rollers 3, 7, and 8 is prepared in two types, 55 degrees and 60 degrees, which are frequently used for the angle of a thread groove such as a normal bolt screw. ing.

以上のような修正治具1の作用等について説明する。
図5に示すように、ネジのネジ山等が潰れた修正ネジnの破損個所を修正する場合、修正ネジnの正常なネジ部分に本修正治具1を装着する。すなわち、図2、図3に示すように、治具本体2の先端側に固定される転造ローラ3を正常なネジ部分のネジ溝に嵌合させ、操作杆9を回転操作することで各ハウジング6を前進させ、上下左右の転造ローラ7、8をネジ溝の正常な部分に嵌合させて締付ける。
The operation of the correction jig 1 as described above will be described.
As shown in FIG. 5, when correcting a damaged portion of the correction screw n whose screw thread has been crushed, the correction jig 1 is mounted on a normal screw portion of the correction screw n. That is, as shown in FIG. 2 and FIG. 3, each rolling roller 3 fixed to the tip end side of the jig body 2 is fitted in a thread groove of a normal screw portion, and the operation rod 9 is rotated and operated. The housing 6 is advanced, and the upper, lower, left, and right rolling rollers 7 and 8 are fitted to the normal part of the thread groove and tightened.

この際、各転造ローラ3、7、8はローラ軸10方向に遊動可能であり、同方向にフローティング支持されているため、ネジのピッチが多少ずれてもネジ溝に嵌合させることができ、また、各転造ローラ3、7、8はピロボールタイプの軸受により自動調心形に支持されるためリード角の如何に拘わらず、ネジ溝の方向に合った姿勢でネジ溝に嵌合する。   At this time, each of the rolling rollers 3, 7, and 8 can be moved in the direction of the roller shaft 10 and is floatingly supported in the same direction, so that it can be fitted into the screw groove even if the pitch of the screw is slightly deviated. In addition, since each rolling roller 3, 7, and 8 is supported in a self-aligning manner by a pillow ball type bearing, it fits into the screw groove in a posture suitable for the direction of the screw groove regardless of the lead angle. .

転造ローラ3、7、8による締付け固定が完了すると、修正治具1を破損個所に向けて移動させるべく回転させていく。すると、図5に示すように、転造ローラ3、7、8は潰されたネジ山を転造で修正しつつネジ溝を移動する。
そして、かかる修正操作は簡単であり、また、こうして修正されたネジ山は、転造加工であるためネジ山の強度を維持することができる。また、異なった径の場合でも一つの治具1で対応することができる。
When the tightening and fixing by the rolling rollers 3, 7, and 8 are completed, the correction jig 1 is rotated to move toward the damaged part. Then, as shown in FIG. 5, the rolling rollers 3, 7, and 8 move through the screw grooves while correcting the crushed screw thread by rolling.
Such a correction operation is simple, and since the screw thread thus corrected is a rolling process, the strength of the screw thread can be maintained. Further, even when the diameters are different, one jig 1 can be used.

ところで、以上の実施例では、左右のハウジング6内にそれぞれ上下二個の転造ローラ7、8を配置するようにしているため、合計五個の転造ローラ3、7、8で安定した姿勢で修正ネジnを把持できたが、左右のハウジング6を一つに纏め、一つのハウジング6内に上下の転造ローラ7、8を設けることで、合計三個の転造ローラ3、7、8で治具1を構成しても良い。   By the way, in the above embodiment, since the two upper and lower rolling rollers 7 and 8 are arranged in the left and right housings 6 respectively, a stable posture with a total of five rolling rollers 3, 7 and 8. The right and left housings 6 are combined into one, and the upper and lower rolling rollers 7 and 8 are provided in one housing 6, so that a total of three rolling rollers 3, 7, 8 may constitute the jig 1.

なお、本発明は以上のような実施形態に限定されるものではない。本発明の特許請求の範囲に記載した事項と実質的に同一の構成を有し、同一の作用効果を奏するものは本発明の技術的範囲に属する。   In addition, this invention is not limited to the above embodiments. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.

ネジ山の潰れ等の破損を修正する治具として、複数の太鼓型形状の転造ローラでネジを挟み付けるようにネジ溝に嵌合させ、治具をネジ溝に沿って回転させて破損を修正するようにしたため、簡単な操作で修正することができ、また、サイズが変わっても一つの治具で対応できる。   As a jig to correct damage such as screw crushing, it is fitted into the screw groove so that the screws are pinched by multiple drum-shaped rolling rollers, and the jig is rotated along the screw groove to break the damage. Since it was corrected, it can be corrected with a simple operation, and even if the size changes, it can be handled with one jig.

本発明に係るネジの修正治具の斜視図The perspective view of the screw correction jig which concerns on this invention 同修正治具を破損ネジに装着した状態の正面図Front view of the corrective jig attached to a damaged screw 同平面図Plan view 転造ロールの拡大図Enlarged view of rolling roll 破損したネジを修正する方法の説明図Illustration of how to fix a damaged screw

符号の説明Explanation of symbols

1…修正治具、2…治具本体、3…転造ローラ、7…転造ローラ、8…転造ローラ、10…ローラ軸。 DESCRIPTION OF SYMBOLS 1 ... Correction jig | tool, 2 ... Jig body, 3 ... Rolling roller, 7 ... Rolling roller, 8 ... Rolling roller, 10 ... Roller shaft.

Claims (2)

破損したネジを修正する治具であって、ネジ溝に嵌合可能な複数の太鼓型形状の転造ローラが対向状に配置され、これら複数の転造ローラのうち、対向する一方側の転造ローラは、他方側の転造ローラに対して進退動自在にされるとともに、任意の位置で固定できるようにされ、且つ前記転造ローラは、ローラ軸方向に遊動可能に支持されることを特徴とするネジの修正治具。 A jig for repairing a damaged screw, and a plurality of drum-shaped rolling rollers that can be fitted into the screw grooves are arranged in an opposing manner, and one of the plurality of rolling rollers facing one side is rolled. The forming roller is made movable forward and backward with respect to the other rolling roller , and can be fixed at an arbitrary position, and the rolling roller is supported so as to be freely movable in the roller axial direction. Characteristic screw correction jig. 前記転造ローラは、ピロボールタイプの軸受で支持されることを特徴とする請求項1に記載のネジの修正治具。 The screw correction jig according to claim 1, wherein the rolling roller is supported by a pillow ball type bearing.
JP2004142165A 2004-05-12 2004-05-12 Screw correction jig Expired - Fee Related JP4407919B2 (en)

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DE102008019437A1 (en) * 2008-04-17 2009-10-22 Gottfried Wilhelm Leibniz Universität Hannover Device and non-cutting forming method for introducing an outer profile into a workpiece
DE102009049580A1 (en) * 2009-10-15 2011-04-21 Gottfried Wilhelm Leibnitz Universität Hannover Device for thread rolling

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